Question

我在使用Django快捷方式渲染页面时遇到了一些困难。我的工作流程非常简单：

用户可以访问他们可以查看某些项目数据的页面（detail_project）
如果他们想要更新项目数据，他们应该单击一个按钮，该按钮将发送POST请求并加载update_project页面。此页面加载了当前项目数据。
用户更新并提交新数据。提交后，它们将返回到detail_project页面。

我的观点是这样的：

def update_project(request):
    if request.method == 'POST':
        if 'update_project_submit' in request.POST:
            # updates project with form data and returns to detail project page
            return redirect('detail_project', project_name=project_name)
        else:
            # loads project original data into the form 
    return render(request, 'project/update_project.html', context)


def detail_project(request, project_name):
    if request.method == 'POST':        
        if 'update_project' in request.POST:
            return update_project(request)
        else:
            # does another stuff
    else:
        # shows project details
        return render(request, 'project/detail_project.html', context)

urls.py：

url(r'^project/update/$', views.update_project, name='update_project'),
url(r'^project/details/(?P<project_name>[a-zA-Z][a-zA-Z0-9-_]+)/$', views.detail_project, name='detail_project'),

并且update_project.html：

<form class="form-horizontal" role="form" action="" method="post">
    {% csrf_token %}
    {% for field in form %}

        <div class="form-group">
            <div class="col-sm-3">
                <label for="{{ field.id_for_label }}" class="control-label">{{ field.label }}</label>
            </div>

            <div class="col-sm-9">
                {{field}}
            </div>
            <div class="col-sm-12">
                {{ field.help_text }}
            </div>
        </div>
        {{field.non_field_errors }}
        {{field.errors}}

    {% endfor %}


    <button type="submit" name="update_project_submit" class="btn btn-primary">Submit</button>

</form>

[更新]

Forms.py

class UpdateProjectForm(forms.Form):

    project_name_validator = RegexValidator(r'^[a-zA-Z][a-zA-Z0-9-_]{1,31}$', constants.PROJECT_NAME_INVALID)
    project_name = forms.CharField(required=True, widget=forms.TextInput(attrs={'required': 'true'}), validators=[project_name_validator])
    project_description = forms.CharField(required=True, widget=forms.Textarea(attrs={'style':'resize:none;', 'required': 'true'}))
    project_expiration = forms.DateField(required=False, widget=forms.TextInput(attrs={'class':'datepicker'}))

    def __init__(self, *args, **kwargs):
        super(UpdateProjectForm, self).__init__(*args, **kwargs)
        self.fields['project_name'].label = "Project Name:"
        self.fields['project_description'].label = "Project Description:"
        self.fields['project_expiration'].label = "Expiration Date:"

问题是我无法更新我的项目。我的页面正确加载表单（update_project）和当前数据（步骤2），但是当我提交它时（单击Submit按钮，我被重定向到详细项目页面而不输入if 'update_project_submit' in request.POST:语句。也许我的工作流程是错的。我无法理解。

我打印了我的请求，我确实已经确认，当我提交表单时，我收到了对detail_project的POST请求。

我有什么遗失的吗？或者我是否根据Django的逻辑尝试做错了什么？

Answer 1

使用

if request.POST.get('update_project_submit', False):

而不是

if 'update_project_submit' in request.POST:

Django视图没有正确重定向

1 个答案: